Carboxylic acid functionalized ortho-linked oxacalix[2]benzene[2]pyrazine: synthesis, structure, hydrogen bond and metal directed self-assembly.

@article{Kong2012CarboxylicAF,
  title={Carboxylic acid functionalized ortho-linked oxacalix[2]benzene[2]pyrazine: synthesis, structure, hydrogen bond and metal directed self-assembly.},
  author={Ling-Wei Kong and Ming-Liang Ma and Liang-Chun Wu and Xiaoli Zhao and Fang Guo and Biao Jiang and Ke Wen},
  journal={Dalton transactions},
  year={2012},
  volume={41 18},
  pages={5625-33}
}
Cyclooligomerization of 2,6-dichloropyrazine 4 and benzyl 2,3-dihydroxybenzoate 5 under microwave irradiation resulted in a racemic pair of ester functionalized ortho-linked oxacalix[2]benzene[2]pyrazine 6, which was further transformed to the corresponding racemic carboxylic acid functionalized ortho-linked oxacalix[2]benzene[2]pyrazine 3. Both enantiomers… CONTINUE READING